The Nature Conservancy of Canada is urging people to document sightings of giant hogweed.
The towering, three-metre green plant has been spreading in southern Ontario and into Central Ontario.
It has large white flowers, and its clear sap can cause blistering third-degree burns and even permanent blindness. The conservancy is asking people to document sightings of the invasive plant.
(Image from www.invadingspecies.com)